US2584024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,4,5-triamino-6-alkoxy pyrimidines and process of preparing same
Assignee: Merck and Co Inc
•
Filing: 1948-08-21
•
Granted: 1952-01-29
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Expires: 1968-08-21
Abstract
No abstract record available.
Inventors
- 👤 Edward A Kaczka
- 👤 Folkers Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:55
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
43 words
THE PROCESS WHICH COMPRISES REACTING 2,4DIAMINO-6-ALKOXY-PYRIMIDINE WITH NITROUS ACID AT A TEMPERATURE BETWEEN 25 AND 30*. AND TREATING THE SUSPENSION OF THE RESULTING PRODUCT IN A LOWER ALIPHATIC ALCOHOL WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST TO PRODUCE THE CORRESPONDING 2,4,5-TRIAMINO-6-ALKOXYPYRIMIDINE
Claim 2
Dependent Claim
43 words
THE PROCESS WHICH COMPRISES REACTING 2,4DIAMINO-6-ALKOXY-PYRIMIDINE WITH NITROUS ACID AT A TEMPERATURE BETWEEN 25 AND 30*. AND TREATING THE SUSPENSION OF THE RESULTING PRODUCT IN A LOWER ALIPHATIC ALCOHOL WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST TO PRODUCE THE CORRESPONDING 2,4,5-TRIAMINO-6-ALKOXYPYRIMIDINE
Claim 3
Dependent Claim
4 words
COMPOUNDS HAVING THE FORMULA:
Claim 4
Dependent Claim
4 words
COMPOUNDS HAVING THE FORMULA:
References Cited (Backward Citations)
US2447523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |